Camera device and thermal imager

Abstract

The utility model relates to the technical field of detection equipment, and provides a camera device and a thermal imager. The camera device comprises a shell and a lens assembly. The shell is provided with a cavity and a first window communicated with the cavity. The lens assembly is arranged in the cavity and comprises a lens barrel, a first lens, a second lens and a fixing seat, the lens barrel is connected to the shell, the first lens and the second lens are arranged on the lens barrel at intervals in the optical axis direction, the first lens is close to the first window, the second lens is glued to the lens barrel, and the fixing seat is pressed on the side, facing the first lens, of the second lens. The fixing base is provided with a second window opening penetrating in the optical axis direction, and the caliber of the second window opening is smaller than 25 mm. The camera device provided by the utility model gives consideration to the explosive-proof requirement and the large field-of-view requirement, and reduces the interference to the field-of-view angle while meeting the explosive-proof performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, in particular to a camera device and a thermal imager. BACKGROUND

[0002] At present, the explosion-proof type camera commonly used adopts a single light-transmitting glass placed in front of a visible light or thermal imaging lens, and the glass is bonded around the periphery by means of point gluing to form an explosion-proof surface, and the internal cavity of the device and the external environment are isolated by the glass. When performing explosion-proof testing, the explosion-proof glass cannot be damaged under a 25mm diameter metal drop ball, so the minimum diameter of the front window of the lens cannot be greater than 25mm. Usually, a protective structure such as a steel mesh is added to the front window of the lens to ensure that the drop ball does not reach the glass surface. However, such a setting causes the field of view angle of the lens to be easily blocked. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a camera device that takes into account the requirements of explosion-proof and large field of view.

[0004] A camera device includes a housing and a lens assembly, the housing is provided with a cavity and a first viewing window communicating with the cavity; the lens assembly is arranged in the cavity and includes a lens barrel, a first lens, a second lens and a fixing seat, the lens barrel is connected to the housing, the first lens and the second lens are arranged in the lens barrel along the optical axis direction, the first lens is arranged close to the first viewing window, the second lens is glued to the lens barrel, the fixing seat is arranged on the side of the second lens facing the first lens, and the fixing seat is provided with a second viewing window penetrating along the optical axis direction; wherein at least one of the aperture of the first viewing window and the aperture of the second viewing window is less than 25mm.

[0005] The camera device provided by the present application uses the second lens as the explosion-proof glass of the camera device, and in the case that the aperture of the second viewing window on the fixing seat is less than 25mm, it can be ensured that the drop ball does not reach the second lens, thereby meeting the explosion-proof requirement; and such a setting causes the field of view angle of the lens assembly to be not affected by the size of the first viewing window, fully ensures that the lens assembly has a larger field of view angle, and reduces the blocking of the field of view angle. At the same time, it is not necessary to add a protective structure at the first viewing window, the thickness of the first viewing window is effectively controlled, and the interference with the field of view angle of the lens assembly is further reduced.

[0006] In some embodiments, the second viewing window is tapered from the direction of the first lens towards the second lens, and the maximum aperture of the second viewing window is less than 25mm.

[0007] In some embodiments, the first viewing window is a waist-shaped hole, and the width of the first viewing window is less than 25mm.

[0008] In some embodiments, the housing has a window side wall, the first window is disposed on the window side wall, the window side wall is provided with a mounting protrusion protruding towards the cavity at the first window, the mounting protrusion is provided with a containing groove in communication with the first window, the cross section of the containing groove is larger than the cross section of the first window, and part of the first lens is contained in the containing groove.

[0009] In some embodiments, the second lens has a first adhesive part and a second adhesive part, which are arranged at an angle, and the first adhesive part is located on the side away from the fixing seat.

[0010] In some embodiments, the volume of the cavity is V, the length of the first adhesive part is c, and the length of the second adhesive part is d, and at least one of the following conditions is met:

[0011] When V≤10 cm3, c+d≥3 mm;

[0012] When 10 cm3

[0013] When V>100 cm3, c+d≥10 mm.

[0014] In some embodiments, the lens barrel is provided with a first assembly step and a second assembly step, which are arranged at intervals along the optical axis direction, the first lens is limited to the first assembly step, and the second lens is limited to the second assembly step.

[0015] In some embodiments, the second assembly step includes a bearing surface and a limiting surface, which are arranged at an angle; the second lens includes a functional area and an assembly area arranged around the periphery of the functional area, the assembly area is provided with the first adhesive part and the second adhesive part, the first adhesive part is fixed by dispensing with the bearing surface, and the second adhesive part is fixed by dispensing with the limiting surface.

[0016] In some embodiments, a first sealing member is arranged between the fixing seat and the second lens; and / or, a second sealing member is arranged between the lens barrel and the housing.

[0017] The application also provides a thermal imager, which includes a display and the above-mentioned camera device, and the display and the camera device are electrically connected. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0019] Figure 1 A partial sectional view of a camera provided by an embodiment of the present application;

[0020] Figure 2 A sectional view of a lens assembly in a camera provided by an embodiment of the present application;

[0021] Figure 3 A partial schematic view of a camera provided by an embodiment of the present application.

[0022] Reference signs: 10, housing; 11, window side wall; 12, assembly protrusion; 13, assembly sleeve; 20, lens assembly; 21, lens barrel; 22, first lens; 23, second lens; 24, fixing seat; 25, blocking ring; 30, core; 41, first sealing member; 42, second sealing member; 101, cavity; 102, first window opening; 201, functional area; 202, assembly area; 211, first assembly step; 212, second assembly step; 231, first adhesive part; 232, second adhesive part; 1201, accommodating groove; 2101, bearing surface; 2102, limiting surface; 2401, second window opening. DETAILED DESCRIPTION

[0023] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other different ways than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when a component is referred to as "fixed to" or "provided on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation.

[0025] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of indicated technical features. Thus, features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0026] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of a first feature to a second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "on", "above" and "over" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is horizontally higher than the second feature. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is horizontally lower than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0028] In the related art, when performing the explosion-proof test of the explosion-proof type camera, it is required to satisfy that the explosion-proof glass cannot be damaged under the metal falling ball with a diameter of 25 mm. Therefore, the diameter of the front end window of the lens is usually set to be small, so that it is not greater than 25 mm, for example, the diameter of the front end window of the lens can be designed to be 24 mm, so as to just intercept the metal falling ball with a diameter of 25 mm. At the same time, a protective structure such as a steel mesh is additionally arranged at the front end of the lens to ensure that the falling ball cannot directly reach the surface of the explosion-proof glass. However, when the diameter of the front end window of the lens is reduced, the effective range of the image that can be collected by the camera is also reduced, which affects the field of view angle of the lens. At the same time, when the protective structure is additionally arranged, the protective structure needs to have a certain thickness, which further increases the overall thickness of the front end window of the lens, and also causes a certain shielding to the field of view angle of the lens.

[0029] In view of this, please refer to Figures 1 to 3An embodiment of the present application provides a camera device meeting both explosion-proof requirements and large field of view requirements, which mainly comprises a shell 10 and a lens assembly 20. The shell 10 surrounds a cavity 101 and a first view window 102 communicating with the cavity 101, and the lens assembly 20 is arranged in the cavity 101 and connected to the shell 10. The lens assembly 20 comprises a lens barrel 21, a first lens 22, a second lens 23 and a fixing seat 24. The lens barrel 21 is connected to the shell 10 to meet the overall assembly of the lens assembly 20 relative to the shell 10. The first lens 22 and the second lens 23 are both arranged on the lens barrel 21 and spaced apart along the optical axis direction. It should be noted that the optical axis here refers to the optical axis of the lens assembly 20. The first lens 22 is arranged close to the first view window 102, and the second lens 23 is located on the side of the first lens 22 away from the first view window 102 along the optical axis direction. The fixing seat 24 is arranged on the side of the second lens 23 facing the first lens 22 and used for limiting the assembly of the second lens 23 relative to the lens barrel 21. The fixing seat 24 is provided with a second view window 2401 penetrating along the optical axis direction. The aperture of the second view window 2401 is less than 25 mm.

[0030] The second lens 23 is glued to the lens barrel 21. That is, the second lens 23 is bonded to the lens barrel 21 by means of dispensing to form an explosion-proof surface, that is, the second lens 23 serves as the explosion-proof glass of the camera device. Such an arrangement is equivalent to arranging the explosion-proof glass of the camera device in the cavity 101 of the shell 10, and the shell 10 can serve as a ball drop support; and in the case that the aperture of the second view window 2401 on the fixing seat 24 is less than 25 mm, the fixing seat 24 is used to support the ball drop to ensure that the ball drop does not reach the second lens 23, thereby meeting the explosion-proof requirement. Moreover, such an arrangement enables the field of view angle of the lens assembly 20 to be unaffected by the size of the first view window 102, fully ensuring that the lens assembly 20 has a large range of field of view angle and reducing the obstruction to the field of view angle. In particular, when the lens assembly 20 of the camera device has a large field of view angle, the aperture of the first view window 102 can be greater than 25 mm to reduce the obstruction to the large field of view angle. At this time, the first lens 22 can be arranged as close to the first view window 102 as possible, or even flush with the first view window 102, to ensure that the lens assembly 20 is not obstructed at any angle of field of view angle. In this process, since the second lens serves as the explosion-proof glass, the explosion-proof requirement of the camera device is still met in the case that the aperture of the second view window 2401 is less than 25 mm. At the same time, since no protective structure needs to be added at the first view window 102 in the embodiment, the thickness at the first view window 102 is effectively controlled, further reducing the interference with the field of view angle of the lens assembly 20. In addition, since the first lens 22 is arranged on the side of the second lens 23 facing the first view window 102, even if the first lens 22 is damaged, the assembly of the second lens 23 will not be affected, ensuring that the camera device can still be used.

[0031] Please refer to Figures 1 to 3 , further, from the first lens 22 to the direction of the second lens 23, the second view window 2401 is tapered, and the maximum aperture b of the second view window 2401 is less than 25mm. That is, it is just because the maximum aperture b of the second view window 2401 is less than 25mm, which can fully block the 25mm falling ball, thereby avoiding the falling ball directly contacting the second lens 23. Moreover, the tapered setting of the second view window 2401 is tapered from the second lens 23 to the first lens 22, which reduces the field angle interference of the second lens 23, and ensures that the field angle of the second lens 23 can be fully exposed as much as possible. Among them, the maximum aperture of the second view window 2401 can be 23mm, 23.5mm, 24mm, 24.5mm, etc.

[0032] Exemplarily, the aperture of the first view window 102 is less than 25mm. It can be understood that the aperture limit of the first view window 102 can be used as the limit of the falling ball of the whole camera. Therefore, when the aperture of the first view window 102 is less than 25mm, it can be ensured that the falling ball will not directly fall to the first lens 22, and the explosion-proof performance is further improved.

[0033] Further, the first view window 102 is a waist-shaped hole, and the width of the first view window 102 is less than 25mm. Such a setting is equivalent to that the minimum size of the first view window 102 is less than 25mm, thereby better supporting and blocking the falling ball; and such a setting can ensure that the first lens 22 is as much as possible to be set in the state of being flush with the first view window 102, thereby ensuring a larger field angle. Among them, the first view window 102 is provided with a chamfer to reduce stress concentration.

[0034] As Figure 1 shown, further, the housing 10 has a view window side wall 11, and the first view window 102 is arranged on the view window side wall 11. The housing 10 is provided with a mounting protrusion 12 at the view window side wall 11, and the lens barrel 21 is connected to the mounting protrusion 12. The mounting protrusion 12 is provided with a containing groove 1201 communicating with the first view window 102, and part of the first lens 22 is contained in the containing groove 1201, and the cross section of the containing groove 1201 is larger than that of the first view window 102. The setting of the mounting protrusion 12 can ensure that the housing 10 has high structural strength at the view window side wall 11, which is beneficial to the tight assembly with the lens barrel 21 and ensures the connection reliability. At the same time, the containing of the first lens 22 by the containing groove 1201 can ensure that the first lens 22 does not need to directly protrude from the first view window 102, thereby improving the assembly protection of the first lens 22.

[0035] In some specific embodiments, the side of the first lens 22 facing away from the second lens 23 is not protruding from the first view window 102, in particular, the side of the first lens 22 not protruding from the first view window 102 towards the cavity 101. It can be understood that if the first lens 22 protrudes from the first view window 102, it is more likely to be touched by other structures and thus be damaged. Therefore, by ensuring that the first lens 22 does not protrude from the first view window 102, the protection of the first lens 22 is further improved.

[0036] Further, the first lens 22 is mounted at the end of the lens barrel 21 facing the first view window 102. Specifically, the lens barrel 21 is provided with a first assembly step 211 and a second assembly step 212, which are arranged along the optical axis direction. The first assembly step 211 is located at one end of the lens barrel 21. The first lens 22 is pressed at the first assembly step 211, and the second lens 23 is pressed at the second assembly step 212. It can be understood that the arrangement of the first assembly step 211 and the second assembly step 212 ensures sufficient contact area on the basis of lens bearing, thereby improving assembly reliability. For example, the first lens 22 is pressed at the first assembly step 211 by the retaining ring 25, realizing the assembly of the first lens 22 relative to the lens barrel 21.

[0037] As shown in Figure 1 and Figure 2 , wherein the first assembly step 211 and the second assembly step 212 each include a limiting surface 2102 and a bearing surface 2101, which are arranged at an angle. If the optical axis direction is taken as the Z-axis direction, the limiting surface 2102 is arranged along the Z-axis direction, and the bearing surface 2101 is arranged along the X-axis direction. The first lens 22 and the second lens 23 can be respectively supported on the corresponding bearing surfaces 2101, and their outer peripheral surfaces can be limited on the corresponding limiting surfaces 2102. In this way, the limiting surface 2102 and the bearing surface 2101 can both serve as the connection range of the lens barrel 21 and the first lens 22 and the second lens 23, thereby improving the connection reliability. In particular for the second lens 23, the limiting surface 2102 and the bearing surface 2101 can both be used for glue fixing, ensuring the explosion-proof requirement.

[0038] As shown in Figure 1 and Figure 2 , wherein the first lens 22 and the second lens 23 each include a functional area 201 and an assembly area 202, the assembly area 202 being arranged around the outer peripheral side of the functional area 201, the assembly area 202 being used for assembly with the lens barrel 21, and the functional area 201 being used for light passing. The functional area 201 can be convex relative to the assembly area 202.

[0039] For the second lens 23, the assembling area 202 of the second lens 23 is provided with the first adhesive part 231 and the second adhesive part 232, which are arranged at an angle. For example, the first adhesive part 231 is a part of the second lens 23 fixed by spot gluing with the bearing surface 2101, and the second adhesive part 232 is a part of the second lens 23 fixed by spot gluing with the limiting surface 2102. The first adhesive part 231 is located on the side of the second lens 23 away from the fixing seat 24.

[0040] Further, when the volume V of the cavity 101 surrounded by the shell 10 is less than or equal to 10 cm3, the sum of the length c of the first adhesive part 231 and the length d of the second adhesive part 232 is not less than 3 mm. When the volume V of the cavity 101 surrounded by the shell 10 is between 10 cm3 and 100 cm3, the sum of the length c of the first adhesive part 231 and the length d of the second adhesive part 232 is not less than 6 mm. When the volume V of the cavity 101 surrounded by the shell 10 is greater than 100 cm3, the sum of the length c of the first adhesive part 231 and the length d of the second adhesive part 232 is not less than 10 mm. That is, the sum of the length c of the first adhesive part 231 and the length d of the second adhesive part 232 is related to the volume of the cavity 101. If the volume increases, the range that needs to be sealed by spot gluing also increases, and the sum of the length c of the first adhesive part 231 and the length d of the second adhesive part 232 also increases. Conversely, if the volume decreases, the range that needs to be sealed by spot gluing also decreases, and the sum of the length c of the first adhesive part 231 and the length d of the second adhesive part 232 also decreases.

[0041] For example, when the volume V of the cavity 101 is less than or equal to 10 cm3, the sum of the length c of the first adhesive part 231 and the length d of the second adhesive part 232 can be 3 mm, 4 mm, or 6 mm. Here, only examples are given.

[0042] As Figure 1 and Figure 2As shown, further, the minimum thickness h of the second lens 23 is not less than 3 mm. It can be understood that the thickness of the lens directly affects the refraction path of the light, thereby affecting the field of view angle, especially when the thickness of the lens increases, which leads to the increase of the length of the refraction path of the light in the lens, thereby reducing the field of view angle. Therefore, in order to ensure a wider field of view angle, the thickness of the second lens 23 should not be too large. However, if the thickness of the second lens 23 is small, the structural strength of the second lens 23 itself is weak and is easy to be damaged under the influence of external impact and other factors. At the same time, since the second adhesive part 232 is arranged in the thickness direction of the second lens 23, if the thickness of the second lens 23 is small, the length of the second adhesive part 232 is small, thereby affecting the explosion-proof glue assembly of the second lens 23. Therefore, the thickness of the second lens 23 should not be too small. Therefore, the thickness of the second lens 23 needs to consider the structural strength, explosion-proof glue assembly and field of view angle. In some specific embodiments, the thickness of the second lens 23 can be 3 mm, 5 mm, 6 mm or 8 mm. Here, only for example, the thickness of the second lens 23 can also be adjusted according to the volume of the cavity 101.

[0043] Please refer to Figure 1 and Figure 2 In actual use, the first sealing member 41 is arranged between the fixed seat 24 and the second lens 23 to further improve the sealing performance of the assembly of the second lens 23. The shell 10 and the lens barrel 21 are connected by screws, and the second sealing member 42 is arranged between the shell 10 and the lens barrel 21 to maintain the sealing requirement between the lens barrel 21 and the shell 10. Alternatively, a third sealing member can also be arranged between the first lens 22 and the lens barrel 21 or between the first lens 22 and the stop ring 25 to ensure the sealing performance of the connection of the first lens 22.

[0044] In some specific embodiments, the first sealing member 41 is a sheet-shaped sealing ring to be in full contact with the assembly area 202 of the second lens 23. The second sealing member 42 is a sealing ring with a circular cross section.

[0045] As shown in Figure 1 , the assembly sleeve 13 can be fixedly connected with the assembly protrusion 12 by bonding, welding or one-piece forming. The lens barrel 21 is inserted into the assembly sleeve 13 and is screw-fastened with the shell 10. The side of the assembly protrusion 12 facing the cavity 101 is recessed with a sealing groove, and part of the second sealing member 42 is arranged in the sealing groove and can be arranged between the assembly sleeve 13, the assembly protrusion 12 and the lens barrel 21 to ensure the sealing performance between the lens barrel 21 and the shell 10.

[0046] As shown in Figure 1As shown, the camera device further comprises a core 30 arranged in the cavity 101 and connected to the end of the lens barrel 21 away from the first view window 102. The core 30 comprises an assembly shell and a detector and a PCB (printed circuit board) arranged in the assembly shell. The assembly shell is connected to the end of the lens barrel 21, and the detector can be an infrared sensor. The core 30 further comprises a baffle arranged on the side of the detector facing the lens assembly 20, which blocks the lens assembly 20 through the lens, so that the detector can adapt to changes in ambient temperature and humidity. The image information detected by the detector can be transmitted to the terminal through the PCB along the cable, and the PCB can be used for electrical signal transmission in the core 30.

[0047] The sealing ring can also be arranged between the lens barrel 21 and the assembly shell to maintain the sealing requirement of the core 30.

[0048] Another embodiment of the present application provides a thermal imager comprising the camera device described above. The thermal imager further comprises a display electrically connected to the PCB in the camera device, for displaying the monitoring image.

[0049] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as within the scope of the present application.

[0050] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. An image pickup device, characterized by comprising: The application relates to a camera lens, which comprises the following parts: a shell (10) provided with a cavity (101) and a first window (102) communicating with the cavity (101); a lens assembly (20) arranged in the cavity (101) and comprising a lens barrel (21), a first lens (22), a second lens (23) and a fixing base (24), the lens barrel (21) being connected to the shell (10), the first lens (22) and the second lens (23) being arranged in the lens barrel (21) along an optical axis direction, the first lens (22) being arranged close to the first window (102), the second lens (23) being glued to the lens barrel (21), the fixing base (24) being arranged on a side of the second lens (23) facing the first lens (22), and the fixing base (24) being provided with a second window (2401) penetrating along the optical axis direction; wherein at least one of the aperture of the first window (102) and the aperture of the second window (2401) is less than 25 mm.

2. The camera of claim 1, wherein The second window (2401) is arranged in a tapered manner from the first lens (22) to the second lens (23), and the maximum aperture of the second window (2401) is less than 25 mm.

3. The camera of claim 1, wherein The first window (102) is in the shape of a waist hole, and the width of the first window (102) is less than 25 mm.

4. The camera of claim 1, wherein The shell (10) is provided with a window side wall (11), the first window (102) is arranged on the window side wall (11), the window side wall (11) is provided with a fitting protrusion (12) protruding towards the cavity (101) at the first window (102), the fitting protrusion (12) is provided with a containing groove (1201) communicating with the first window (102), the cross section of the containing groove (1201) is larger than the cross section of the first window (102), and part of the first lens (22) is arranged in the containing groove (1201).

5. The camera of claim 1, wherein The second lens (23) is provided with a first gluing part (231) and a second gluing part (232) arranged at an angle, and the first gluing part (231) is located on a side away from the fixing base (24).

6. The camera of claim 5, wherein, The volume of the cavity (101) is V, the length of the first gluing part (231) is c, and the length of the second gluing part (232) is d, and at least one of the following conditions is met: when V is less than or equal to 10 cm3, c+d is greater than or equal to 3 mm; when 10 cm3 when V is greater than 100 cm3, c+d is greater than or equal to 10 mm.

7. The camera of claim 5, wherein, The lens barrel (21) is provided with a first fitting step (211) and a second fitting step (212) arranged at intervals along the optical axis direction, the first lens (22) is limited in the first fitting step (211), and the second lens (23) is limited in the second fitting step (212).

8. The camera of claim 7, wherein, The second fitting step (212) comprises a bearing surface (2101) and a limiting surface (2102) arranged at an angle. The second lens (23) comprises a functional area (201) and an assembly area (202) arranged at the peripheral side of the functional area (201), the assembly area (202) is provided with the first adhesive part (231) and the second adhesive part (232), the first adhesive part (231) is fixed by dispensing with the bearing surface (2101), and the second adhesive part (232) is fixed by dispensing with the limiting surface (2102).

9. The camera according to any one of claims 1 to 8, characterized by, A first sealing member (41) is arranged between the fixed seat (24) and the second lens (23); and / or, a second sealing member (42) is arranged between the lens barrel (21) and the shell (10).

10. A thermal imager, characterized in that The camera device of any one of claims 1-9, comprising a display electrically connected to the camera device.

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